[ViewVC] Diff of: cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.27 by root, Fri Jul 21 00:51:39 2006 UTC vs.
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC

…		…
5	use Storable;	5	use Storable;
6	use Opcode;	6	use Opcode;
7	use Safe;	7	use Safe;
8	use Safe::Hole;	8	use Safe::Hole;
9		9
		10	use YAML::Syck ();
		11	use Time::HiRes;
10	use Event;	12	use Event;
11	$Event::Eval = 1; # no idea why this is required, but it is	13	$Event::Eval = 1; # no idea why this is required, but it is
12		14
		15	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		16	$YAML::Syck::ImplicitUnicode = 1;
		17
13	use strict;	18	use strict;
14		19
		20	_init_vars;
		21
15	our %COMMAND;	22	our %COMMAND = ();
16	our @EVENT;	23	our @EVENT;
17	our %PROP_TYPE;
18	our %PROP_IDX;
19	our $LIBDIR = maps_directory "perl";	24	our $LIBDIR = maps_directory "perl";
20		25
		26	our $TICK = MAX_TIME * 1e-6;
		27	our $TICK_WATCHER;
		28	our $NEXT_TICK;
		29
		30	our %CFG;
		31
		32	our $uptime;
		33
		34	$uptime \|\|= time;
		35
		36	#############################################################################
		37
		38	=head2 GLOBAL VARIABLES
		39
		40	=over 4
		41
		42	=item $cf::LIBDIR
		43
		44	The perl library directory, where extensions and cf-specific modules can
		45	be found. It will be added to C<@INC> automatically.
		46
		47	=item $cf::TICK
		48
		49	The interval between server ticks, in seconds.
		50
		51	=item %cf::CFG
		52
		53	Configuration for the server, loaded from C</etc/crossfire/config>, or
		54	from wherever your confdir points to.
		55
		56	=back
		57
		58	=cut
		59
21	BEGIN {	60	BEGIN {
22	@EVENT = map lc, @EVENT;
23
24	*CORE::GLOBAL::warn = sub {	61	*CORE::GLOBAL::warn = sub {
25	my $msg = join "", @_;	62	my $msg = join "", @_;
26	$msg .= "\n"	63	$msg .= "\n"
27	unless $msg =~ /\n$/;	64	unless $msg =~ /\n$/;
28		65
29	print STDERR "cfperl: $msg";	66	print STDERR "cfperl: $msg";
30	LOG llevError, "cfperl: $msg";	67	LOG llevError, "cfperl: $msg";
31	};	68	};
32	}	69	}
33		70
34	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
35		72
36	# generate property mutators	73	# we bless all objects into (empty) derived classes to force a method lookup
37	sub prop_gen {	74	# within the Safe compartment.
38	my ($prefix, $class) = @_;	75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {
39
40	no strict 'refs';	76	no strict 'refs';
41
42	for my $prop (keys %PROP_TYPE) {
43	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
44	my $sub = lc $1;
45
46	my $type = $PROP_TYPE{$prop};
47	my $idx = $PROP_IDX {$prop};
48
49	{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
50	$_[0]->get_property ($type, $idx)
51	};
52
53	*{"$class\::set_$sub"} = sub {
54	$_[0]->set_property ($type, $idx, $_[1]);
55	} unless $ignore_set{$prop};
56	}
57	}
58
59	# auto-generate most of the API
60
61	prop_gen OBJECT_PROP => "cf::object";
62	# CFAPI_OBJECT_ANIMATION?
63	prop_gen PLAYER_PROP => "cf::object::player";
64
65	prop_gen MAP_PROP => "cf::map";
66	prop_gen ARCH_PROP => "cf::arch";
67
68	# guessed hierarchies
69
70	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
71	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
72
73	# we bless all objects into derived classes to force a method lookup
74	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region)) {
76	no strict 'refs';
77	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	78	}
79		79
80	$Event::DIED = sub {	80	$Event::DIED = sub {
81	warn "error in event callback: @_";	81	warn "error in event callback: @_";
82	};	82	};
…		…
85	my @exts;	85	my @exts;
86	my @hook;	86	my @hook;
87	my %command;	87	my %command;
88	my %extcmd;	88	my %extcmd;
89		89
		90	=head2 UTILITY FUNCTIONS
		91
		92	=over 4
		93
		94	=cut
		95
		96	use JSON::Syck (); # TODO# replace by JSON::PC once working
		97
		98	=item $ref = cf::from_json $json
		99
		100	Converts a JSON string into the corresponding perl data structure.
		101
		102	=cut
		103
		104	sub from_json($) {
		105	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		106	JSON::Syck::Load $_[0]
		107	}
		108
		109	=item $json = cf::to_json $ref
		110
		111	Converts a perl data structure into its JSON representation.
		112
		113	=cut
		114
		115	sub to_json($) {
		116	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		117	JSON::Syck::Dump $_[0]
		118	}
		119
		120	=back
		121
		122	=cut
		123
		124	#############################################################################
		125
		126	=head2 EVENTS AND OBJECT ATTACHMENTS
		127
		128	=over 4
		129
		130	=item $object->attach ($attachment, key => $value...)
		131
		132	=item $object->detach ($attachment)
		133
		134	Attach/detach a pre-registered attachment to an object.
		135
		136	=item $player->attach ($attachment, key => $value...)
		137
		138	=item $player->detach ($attachment)
		139
		140	Attach/detach a pre-registered attachment to a player.
		141
		142	=item $map->attach ($attachment, key => $value...)
		143
		144	=item $map->detach ($attachment)
		145
		146	Attach/detach a pre-registered attachment to a map.
		147
		148	=item $bool = $object->attached ($name)
		149
		150	=item $bool = $player->attached ($name)
		151
		152	=item $bool = $map->attached ($name)
		153
		154	Checks wether the named attachment is currently attached to the object.
		155
		156	=item cf::attach_global ...
		157
		158	Attach handlers for global events.
		159
		160	This and all following C<attach_*>-functions expect any number of the
		161	following handler/hook descriptions:
		162
		163	=over 4
		164
		165	=item prio => $number
		166
		167	Set the priority for all following handlers/hooks (unless overwritten
		168	by another C<prio> setting). Lower priority handlers get executed
		169	earlier. The default priority is C<0>, and many built-in handlers are
		170	registered at priority C<-1000>, so lower priorities should not be used
		171	unless you know what you are doing.
		172
		173	=item on_I<event> => \&cb
		174
		175	Call the given code reference whenever the named event happens (event is
		176	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		177	handlers are recognised generally depends on the type of object these
		178	handlers attach to).
		179
		180	See F<include/eventinc.h> for the full list of events supported, and their
		181	class.
		182
		183	=item package => package::
		184
		185	Look for sub functions of the name C<< on_I<event> >> in the given
		186	package and register them. Only handlers for eevents supported by the
		187	object/class are recognised.
		188
		189	=back
		190
		191	=item cf::attach_to_type $object_type, $subtype, ...
		192
		193	Attach handlers for a specific object type (e.g. TRANSPORT) and
		194	subtype. If C<$subtype> is zero or undef, matches all objects of the given
		195	type.
		196
		197	=item cf::attach_to_objects ...
		198
		199	Attach handlers to all objects. Do not use this except for debugging or
		200	very rare events, as handlers are (obviously) called for I<all> objects in
		201	the game.
		202
		203	=item cf::attach_to_players ...
		204
		205	Attach handlers to all players.
		206
		207	=item cf::attach_to_maps ...
		208
		209	Attach handlers to all maps.
		210
		211	=item cf:register_attachment $name, ...
		212
		213	Register an attachment by name through which objects can refer to this
		214	attachment.
		215
		216	=item cf:register_player_attachment $name, ...
		217
		218	Register an attachment by name through which players can refer to this
		219	attachment.
		220
		221	=item cf:register_map_attachment $name, ...
		222
		223	Register an attachment by name through which maps can refer to this
		224	attachment.
		225
		226	=cut
		227
		228	# the following variables are defined in .xs and must not be re-created
		229	our @CB_GLOBAL = (); # registry for all global events
		230	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		231	our @CB_PLAYER = ();
		232	our @CB_TYPE = (); # registry for type (cf-object class) based events
		233	our @CB_MAP = ();
		234
		235	my %attachment;
		236
		237	sub _attach_cb($\%$$$) {
		238	my ($registry, $undo, $event, $prio, $cb) = @_;
		239
		240	use sort 'stable';
		241
		242	$cb = [$prio, $cb];
		243
		244	@{$registry->[$event]} = sort
		245	{ $a->[0] cmp $b->[0] }
		246	@{$registry->[$event] \|\| []}, $cb;
		247
		248	push @{$undo->{cb}}, [$event, $cb];
		249	}
		250
		251	# attach handles attaching event callbacks
		252	# the only thing the caller has to do is pass the correct
		253	# registry (== where the callback attaches to).
		254	sub _attach(\@$@) {
		255	my ($registry, $klass, @arg) = @_;
		256
		257	my $prio = 0;
		258
		259	my %undo = (
		260	registry => $registry,
		261	cb => [],
		262	);
		263
		264	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		265
		266	while (@arg) {
		267	my $type = shift @arg;
		268
		269	if ($type eq "prio") {
		270	$prio = shift @arg;
		271
		272	} elsif ($type eq "package") {
		273	my $pkg = shift @arg;
		274
		275	while (my ($name, $id) = each %cb_id) {
		276	if (my $cb = $pkg->can ($name)) {
		277	_attach_cb $registry, %undo, $id, $prio, $cb;
		278	}
		279	}
		280
		281	} elsif (exists $cb_id{$type}) {
		282	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
		283
		284	} elsif (ref $type) {
		285	warn "attaching objects not supported, ignoring.\n";
		286
		287	} else {
		288	shift @arg;
		289	warn "attach argument '$type' not supported, ignoring.\n";
		290	}
		291	}
		292
		293	\%undo
		294	}
		295
		296	sub _attach_attachment {
		297	my ($obj, $name, %arg) = @_;
		298
		299	return if exists $obj->{_attachment}{$name};
		300
		301	my $res;
		302
		303	if (my $attach = $attachment{$name}) {
		304	my $registry = $obj->registry;
		305
		306	for (@$attach) {
		307	my ($klass, @attach) = @$_;
		308	$res = _attach @$registry, $klass, @attach;
		309	}
		310
		311	$obj->{$name} = \%arg;
		312	} else {
		313	warn "object uses attachment '$name' that is not available, postponing.\n";
		314	}
		315
		316	$obj->{_attachment}{$name} = undef;
		317
		318	$res->{attachment} = $name;
		319	$res
		320	}
		321
		322	*cf::object::attach =
		323	*cf::player::attach =
		324	*cf::map::attach = sub {
		325	my ($obj, $name, %arg) = @_;
		326
		327	_attach_attachment $obj, $name, %arg;
		328	};
		329
		330	# all those should be optimised
		331	*cf::object::detach =
		332	*cf::player::detach =
		333	*cf::map::detach = sub {
		334	my ($obj, $name) = @_;
		335
		336	delete $obj->{_attachment}{$name};
		337	reattach ($obj);
		338	};
		339
		340	*cf::object::attached =
		341	*cf::player::attached =
		342	*cf::map::attached = sub {
		343	my ($obj, $name) = @_;
		344
		345	exists $obj->{_attachment}{$name}
		346	};
		347
		348	sub attach_global {
		349	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
		350	}
		351
		352	sub attach_to_type {
		353	my $type = shift;
		354	my $subtype = shift;
		355
		356	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
		357	}
		358
		359	sub attach_to_objects {
		360	_attach @CB_OBJECT, KLASS_OBJECT, @_
		361	}
		362
		363	sub attach_to_players {
		364	_attach @CB_PLAYER, KLASS_PLAYER, @_
		365	}
		366
		367	sub attach_to_maps {
		368	_attach @CB_MAP, KLASS_MAP, @_
		369	}
		370
		371	sub register_attachment {
		372	my $name = shift;
		373
		374	$attachment{$name} = [[KLASS_OBJECT, @_]];
		375	}
		376
		377	sub register_player_attachment {
		378	my $name = shift;
		379
		380	$attachment{$name} = [[KLASS_PLAYER, @_]];
		381	}
		382
		383	sub register_map_attachment {
		384	my $name = shift;
		385
		386	$attachment{$name} = [[KLASS_MAP, @_]];
		387	}
		388
		389	our $override;
		390	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		391
		392	sub override {
		393	$override = 1;
		394	@invoke_results = ();
		395	}
		396
		397	sub do_invoke {
		398	my $event = shift;
		399	my $callbacks = shift;
		400
		401	@invoke_results = ();
		402
		403	local $override;
		404
		405	for (@$callbacks) {
		406	eval { &{$_->[1]} };
		407
		408	if ($@) {
		409	warn "$@";
		410	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		411	override;
		412	}
		413
		414	return 1 if $override;
		415	}
		416
		417	0
		418	}
		419
		420	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...
		421
		422	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
		423
		424	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
		425
		426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
		427
		428	Generate a global/object/player/map-specific event with the given arguments.
		429
		430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
		431	removed in future versions), and there is no public API to access override
		432	results (if you must, access C<@cf::invoke_results> directly).
		433
		434	=back
		435
		436	=cut
		437
		438	#############################################################################
		439
		440	=head2 METHODS VALID FOR ALL CORE OBJECTS
		441
		442	=over 4
		443
		444	=item $object->valid, $player->valid, $map->valid
		445
		446	Just because you have a perl object does not mean that the corresponding
		447	C-level object still exists. If you try to access an object that has no
		448	valid C counterpart anymore you get an exception at runtime. This method
		449	can be used to test for existence of the C object part without causing an
		450	exception.
		451
		452	=back
		453
		454	=cut
		455
		456	*cf::object::valid =
		457	*cf::player::valid =
		458	*cf::map::valid = \&cf::_valid;
		459
		460	#############################################################################
		461	# object support
		462
		463	sub instantiate {
		464	my ($obj, $data) = @_;
		465
		466	$data = from_json $data;
		467
		468	for (@$data) {
		469	my ($name, $args) = @$_;
		470
		471	$obj->attach ($name, %{$args \|\| {} });
		472	}
		473	}
		474
		475	# basically do the same as instantiate, without calling instantiate
		476	sub reattach {
		477	my ($obj) = @_;
		478	my $registry = $obj->registry;
		479
		480	@$registry = ();
		481
		482	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} \|\| {} };
		483
		484	for my $name (keys %{ $obj->{_attachment} \|\| {} }) {
		485	if (my $attach = $attachment{$name}) {
		486	for (@$attach) {
		487	my ($klass, @attach) = @$_;
		488	_attach @$registry, $klass, @attach;
		489	}
		490	} else {
		491	warn "object uses attachment '$name' that is not available, postponing.\n";
		492	}
		493	}
		494	}
		495
		496	sub object_freezer_save {
		497	my ($filename, $rdata, $objs) = @_;
		498
		499	if (length $$rdata) {
		500	warn sprintf "saving %s (%d,%d)\n",
		501	$filename, length $$rdata, scalar @$objs;
		502
		503	if (open my $fh, ">:raw", "$filename~") {
		504	chmod SAVE_MODE, $fh;
		505	syswrite $fh, $$rdata;
		506	close $fh;
		507
		508	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		509	chmod SAVE_MODE, $fh;
		510	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
		511	close $fh;
		512	rename "$filename.pst~", "$filename.pst";
		513	} else {
		514	unlink "$filename.pst";
		515	}
		516
		517	rename "$filename~", $filename;
		518	} else {
		519	warn "FATAL: $filename~: $!\n";
		520	}
		521	} else {
		522	unlink $filename;
		523	unlink "$filename.pst";
		524	}
		525	}
		526
		527	sub object_thawer_load {
		528	my ($filename) = @_;
		529
		530	local $/;
		531
		532	my $av;
		533
		534	#TODO: use sysread etc.
		535	if (open my $data, "<:raw:perlio", $filename) {
		536	$data = <$data>;
		537	if (open my $pst, "<:raw:perlio", "$filename.pst") {
		538	$av = eval { (Storable::thaw <$pst>)->{objs} };
		539	}
		540	return ($data, $av);
		541	}
		542
		543	()
		544	}
		545
		546	attach_to_objects
		547	prio => -1000000,
		548	on_clone => sub {
		549	my ($src, $dst) = @_;
		550
		551	@{$dst->registry} = @{$src->registry};
		552
		553	%$dst = %$src;
		554
		555	%{$dst->{_attachment}} = %{$src->{_attachment}}
		556	if exists $src->{_attachment};
		557	},
		558	;
		559
		560	#############################################################################
		561	# old plug-in events
		562
90	sub inject_event {	563	sub inject_event {
91	my $extension = shift;	564	my $extension = shift;
92	my $event_code = shift;	565	my $event_code = shift;
93		566
94	my $cb = $hook[$event_code]{$extension}	567	my $cb = $hook[$event_code]{$extension}
…		…
136	}	609	}
137		610
138	sub register {	611	sub register {
139	my ($base, $pkg) = @_;	612	my ($base, $pkg) = @_;
140		613
141	for my $idx (0 .. $#EVENT) {	614	#TODO
142	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
143	#warn "registering $EVENT[$idx] hook to '$pkg'\n";
144	$hook[$idx]{$base} = $ref;
145	}
146	}
147	}	615	}
148		616
149	sub load_extension {	617	sub load_extension {
150	my ($path) = @_;	618	my ($path) = @_;
151		619
152	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	620	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
153	my $base = $1;	621	my $base = $1;
154	my $pkg = $1;	622	my $pkg = $1;
155	$pkg =~ s/[^[:word:]]/_/g;	623	$pkg =~ s/[^[:word:]]/_/g;
156	$pkg = "cf::ext::$pkg";	624	$pkg = "ext::$pkg";
157		625
158	warn "loading '$path' into '$pkg'\n";	626	warn "loading '$path' into '$pkg'\n";
159		627
160	open my $fh, "<:utf8", $path	628	open my $fh, "<:utf8", $path
161	or die "$path: $!";	629	or die "$path: $!";
…		…
181	sub unload_extension {	649	sub unload_extension {
182	my ($pkg) = @_;	650	my ($pkg) = @_;
183		651
184	warn "removing extension $pkg\n";	652	warn "removing extension $pkg\n";
185		653
186	if (my $cb = $pkg->can ("on_unload")) {
187	$cb->($pkg);
188	}
189
190	# remove hooks	654	# remove hooks
		655	#TODO
191	for my $idx (0 .. $#EVENT) {	656	# for my $idx (0 .. $#PLUGIN_EVENT) {
192	delete $hook[$idx]{$pkg};	657	# delete $hook[$idx]{$pkg};
193	}	658	# }
194		659
195	# remove commands	660	# remove commands
196	for my $name (keys %command) {	661	for my $name (keys %command) {
197	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	662	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
198		663
…		…
208	# remove extcmds	673	# remove extcmds
209	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	674	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
210	delete $extcmd{$name};	675	delete $extcmd{$name};
211	}	676	}
212		677
		678	if (my $cb = $pkg->can ("unload")) {
		679	eval {
		680	$cb->($pkg);
		681	1
		682	} or warn "$pkg unloaded, but with errors: $@";
		683	}
		684
213	Symbol::delete_package $pkg;	685	Symbol::delete_package $pkg;
214	}	686	}
215		687
216	sub load_extensions {	688	sub load_extensions {
217	my $LIBDIR = maps_directory "perl";	689	my $LIBDIR = maps_directory "perl";
…		…
223	1	695	1
224	} or warn "$ext not loaded: $@";	696	} or warn "$ext not loaded: $@";
225	}	697	}
226	}	698	}
227		699
228	register_command "perl-reload", 0, sub {	700	#############################################################################
229	my ($who, $arg) = @_;	701	# extcmd framework, basically convert ext <msg>
		702	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
230		703
231	if ($who->flag (FLAG_WIZ)) {	704	attach_to_players
232	$who->message ("reloading...");	705	on_extcmd => sub {
		706	my ($pl, $buf) = @_;
233		707
234	warn "reloading...\n";	708	my $msg = eval { from_json $buf };
235	eval {
236	# 1. cancel all watchers
237	$_->cancel for Event::all_watchers;
238		709
239	# 2. unload all extensions	710	if (ref $msg) {
240	for (@exts) {	711	if (my $cb = $extcmd{$msg->{msgtype}}) {
241	$who->message ("unloading <$_>");	712	if (my %reply = $cb->[0]->($pl, $msg)) {
242	unload_extension $_;	713	$pl->ext_reply ($msg->{msgid}, %reply);
		714	}
243	}	715	}
244		716	} else {
245	# 3. unload all modules loaded from $LIBDIR	717	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
246	while (my ($k, $v) = each %INC) {
247	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
248
249	$who->message ("removing <$k>");
250	delete $INC{$k};
251
252	$k =~ s/\.pm$//;
253	$k =~ s/\//::/g;
254
255	if (my $cb = $k->can ("unload_module")) {
256	$cb->();
257	}
258
259	Symbol::delete_package $k;
260	}
261
262	# 4. get rid of ext::, as good as possible
263	Symbol::delete_package "ext::$_"
264	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
265
266	# 5. remove register_script_function callbacks
267	# TODO
268
269	# 6. unload cf.pm "a bit"
270	delete $INC{"cf.pm"};
271
272	# don't, removes xs symbols, too
273	#Symbol::delete_package __PACKAGE__;
274
275	# 7. reload cf.pm
276	$who->message ("reloading cf.pm");
277	require cf;
278	};	718	}
279	warn $@ if $@;
280	$who->message ($@) if $@;
281	warn "reloaded\n";
282		719
283	$who->message ("reloaded");	720	cf::override;
284	} else {
285	$who->message ("Intruder Alert!");
286	}	721	},
287	};	722	;
288
289	#############################################################################
290	# extcmd framework, basically convert ext <id> <pkg> arg1 args
291	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
292
293	sub on_extcmd {
294	my ($pl, $buf) = @_;
295
296	my ($type) = $buf =~ s/^(\S+) // ? $1 : "";
297
298	$extcmd{$type}[0]->($pl, $buf)
299	if $extcmd{$type};
300	}
301		723
302	#############################################################################	724	#############################################################################
303	# load/save/clean perl data associated with a map	725	# load/save/clean perl data associated with a map
304		726
305	*on_mapclean = sub {	727	*cf::mapsupport::on_clean = sub {
306	my ($map) = @_;	728	my ($map) = @_;
307		729
308	my $path = $map->tmpname;	730	my $path = $map->tmpname;
309	defined $path or return;	731	defined $path or return;
310		732
311	unlink "$path.cfperl";	733	unlink "$path.pst";
312	};	734	};
313		735
314	*on_mapin =	736	attach_to_maps prio => -10000, package => cf::mapsupport::;
315	*on_mapload = sub {
316	my ($map) = @_;
317
318	my $path = $map->tmpname;
319	$path = $map->path unless defined $path;
320
321	open my $fh, "<:raw", "$path.cfperl"
322	or return; # no perl data
323
324	my $data = Storable::thaw do { local $/; <$fh> };
325
326	$data->{version} <= 1
327	or return; # too new
328
329	$map->_set_obs ($data->{obs});
330	};
331
332	*on_mapout = sub {
333	my ($map) = @_;
334
335	my $path = $map->tmpname;
336	$path = $map->path unless defined $path;
337
338	my $obs = $map->_get_obs;
339
340	if (defined $obs) {
341	open my $fh, ">:raw", "$path.cfperl"
342	or die "$path.cfperl: $!";
343
344	stat $path;
345
346	print $fh Storable::nfreeze {
347	size => (stat _)[7],
348	time => (stat _)[9],
349	version => 1,
350	obs => $obs,
351	};
352
353	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
354	} else {
355	unlink "$path.cfperl";
356	}
357	};
358		737
359	#############################################################################	738	#############################################################################
360	# load/save perl data associated with player->ob objects	739	# load/save perl data associated with player->ob objects
361		740
362	*on_player_load = sub {	741	sub all_objects(@) {
		742	@_, map all_objects ($_->inv), @_
		743	}
		744
		745	# TODO: compatibility cruft, remove when no longer needed
		746	attach_to_players
		747	on_load => sub {
363	my ($ob, $path) = @_;	748	my ($pl, $path) = @_;
364		749
365	for my $o ($ob, $ob->inv) {	750	for my $o (all_objects $pl->ob) {
366	if (my $value = $o->get_ob_key_value ("_perl_data")) {	751	if (my $value = $o->get_ob_key_value ("_perl_data")) {
367	$o->set_ob_key_value ("_perl_data");	752	$o->set_ob_key_value ("_perl_data");
368		753
369	%$o = %{ Storable::thaw pack "H*", $value };	754	%$o = %{ Storable::thaw pack "H*", $value };
370	}	755	}
		756	}
371	}	757	},
372	};	758	;
373		759
374	*on_player_save = sub {
375	my ($ob, $path) = @_;
376
377	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
378	for grep %$_, $ob, $ob->inv;
379	};
380
381	#############################################################################	760	#############################################################################
382	# core extensions - in perl	761
		762	=head2 CORE EXTENSIONS
		763
		764	Functions and methods that extend core crossfire objects.
		765
		766	=over 4
383		767
384	=item cf::player::exists $login	768	=item cf::player::exists $login
385		769
386	Returns true when the given account exists.	770	Returns true when the given account exists.
387		771
…		…
389		773
390	sub cf::player::exists($) {	774	sub cf::player::exists($) {
391	cf::player::find $_[0]	775	cf::player::find $_[0]
392	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	776	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
393	}	777	}
		778
		779	=item $object->reply ($npc, $msg[, $flags])
		780
		781	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
		782	can be C<undef>. Does the right thing when the player is currently in a
		783	dialogue with the given NPC character.
		784
		785	=cut
394		786
395	# rough implementation of a future "reply" method that works	787	# rough implementation of a future "reply" method that works
396	# with dialog boxes.	788	# with dialog boxes.
397	sub cf::object::player::reply($$$;$) {	789	sub cf::object::player::reply($$$;$) {
398	my ($self, $npc, $msg, $flags) = @_;	790	my ($self, $npc, $msg, $flags) = @_;
…		…
405	$msg = $npc->name . " says: $msg" if $npc;	797	$msg = $npc->name . " says: $msg" if $npc;
406	$self->message ($msg, $flags);	798	$self->message ($msg, $flags);
407	}	799	}
408	}	800	}
409		801
410	#############################################################################	802	=item $player->ext_reply ($msgid, $msgtype, %msg)
411	# map scripting support
412		803
		804	Sends an ext reply to the player.
		805
		806	=cut
		807
		808	sub cf::player::ext_reply($$$%) {
		809	my ($self, $id, %msg) = @_;
		810
		811	$msg{msgid} = $id;
		812
		813	$self->send ("ext " . to_json \%msg);
		814	}
		815
		816	=back
		817
		818	=cut
		819
		820	#############################################################################
		821
		822	=head2 SAFE SCRIPTING
		823
		824	Functions that provide a safe environment to compile and execute
		825	snippets of perl code without them endangering the safety of the server
		826	itself. Looping constructs, I/O operators and other built-in functionality
		827	is not available in the safe scripting environment, and the number of
		828	functions and methods that cna be called is greatly reduced.
		829
		830	=cut
		831
413	our $safe = new Safe "ext";	832	our $safe = new Safe "safe";
414	our $safe_hole = new Safe::Hole;	833	our $safe_hole = new Safe::Hole;
415		834
416	$SIG{FPE} = 'IGNORE';	835	$SIG{FPE} = 'IGNORE';
417		836
418	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	837	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
419		838
420	# here we export the classes and methods available to script code	839	# here we export the classes and methods available to script code
		840
		841	=pod
		842
		843	The following fucntions and emthods are available within a safe environment:
		844
		845	cf::object contr pay_amount pay_player
		846	cf::object::player player
		847	cf::player peaceful
		848
		849	=cut
421		850
422	for (	851	for (
423	["cf::object" => qw(contr pay_amount pay_player)],	852	["cf::object" => qw(contr pay_amount pay_player)],
424	["cf::object::player" => qw(player)],	853	["cf::object::player" => qw(player)],
425	["cf::player" => qw(peaceful)],	854	["cf::player" => qw(peaceful)],
426	) {	855	) {
427	no strict 'refs';	856	no strict 'refs';
428	my ($pkg, @funs) = @$_;	857	my ($pkg, @funs) = @$_;
429	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	858	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
430	for @funs;	859	for @funs;
431	}	860	}
		861
		862	=over 4
		863
		864	=item @retval = safe_eval $code, [var => value, ...]
		865
		866	Compiled and executes the given perl code snippet. additional var/value
		867	pairs result in temporary local (my) scalar variables of the given name
		868	that are available in the code snippet. Example:
		869
		870	my $five = safe_eval '$first + $second', first => 1, second => 4;
		871
		872	=cut
432		873
433	sub safe_eval($;@) {	874	sub safe_eval($;@) {
434	my ($code, %vars) = @_;	875	my ($code, %vars) = @_;
435		876
436	my $qcode = $code;	877	my $qcode = $code;
437	$qcode =~ s/"/‟/g; # not allowed in #line filenames	878	$qcode =~ s/"/‟/g; # not allowed in #line filenames
438	$qcode =~ s/\n/\\n/g;	879	$qcode =~ s/\n/\\n/g;
439		880
440	local $_;	881	local $_;
441	local @ext::cf::_safe_eval_args = values %vars;	882	local @safe::cf::_safe_eval_args = values %vars;
442		883
443	$code =	884	my $eval =
444	"do {\n"	885	"do {\n"
445	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	886	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
446	. "#line 0 \"{$qcode}\"\n"	887	. "#line 0 \"{$qcode}\"\n"
447	. $code	888	. $code
448	. "\n}"	889	. "\n}"
449	;	890	;
450		891
451	sub_generation_inc;	892	sub_generation_inc;
452	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	893	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
453	sub_generation_inc;	894	sub_generation_inc;
454		895
		896	if ($@) {
		897	warn "$@";
		898	warn "while executing safe code '$code'\n";
		899	warn "with arguments " . (join " ", %vars) . "\n";
		900	}
		901
455	wantarray ? @res : $res[0]	902	wantarray ? @res : $res[0]
456	}	903	}
		904
		905	=item cf::register_script_function $function => $cb
		906
		907	Register a function that can be called from within map/npc scripts. The
		908	function should be reasonably secure and should be put into a package name
		909	like the extension.
		910
		911	Example: register a function that gets called whenever a map script calls
		912	C<rent::overview>, as used by the C<rent> extension.
		913
		914	cf::register_script_function "rent::overview" => sub {
		915	...
		916	};
		917
		918	=cut
457		919
458	sub register_script_function {	920	sub register_script_function {
459	my ($fun, $cb) = @_;	921	my ($fun, $cb) = @_;
460		922
461	no strict 'refs';	923	no strict 'refs';
462	*{"ext::$fun"} = $safe_hole->wrap ($cb);	924	*{"safe::$fun"} = $safe_hole->wrap ($cb);
		925	}
		926
		927	=back
		928
		929	=cut
		930
		931	#############################################################################
		932
		933	=head2 EXTENSION DATABASE SUPPORT
		934
		935	Crossfire maintains a very simple database for extension use. It can
		936	currently store anything that can be serialised using Storable, which
		937	excludes objects.
		938
		939	The parameter C<$family> should best start with the name of the extension
		940	using it, it should be unique.
		941
		942	=over 4
		943
		944	=item $hashref = cf::db_get $family
		945
		946	Return a hashref for use by the extension C<$family>, which can be
		947	modified. After modifications, you have to call C<cf::db_dirty> or
		948	C<cf::db_sync>.
		949
		950	=item $value = cf::db_get $family => $key
		951
		952	Returns a single value from the database
		953
		954	=item cf::db_put $family => $hashref
		955
		956	Stores the given family hashref into the database. Updates are delayed, if
		957	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		958
		959	=item cf::db_put $family => $key => $value
		960
		961	Stores the given C<$value> in the family hash. Updates are delayed, if you
		962	want the data to be synced to disk immediately, use C<cf::db_sync>.
		963
		964	=item cf::db_dirty
		965
		966	Marks the database as dirty, to be updated at a later time.
		967
		968	=item cf::db_sync
		969
		970	Immediately write the database to disk I<if it is dirty>.
		971
		972	=cut
		973
		974	{
		975	my $db;
		976	my $path = cf::localdir . "/database.pst";
		977
		978	sub db_load() {
		979	warn "loading database $path\n";#d# remove later
		980	$db = stat $path ? Storable::retrieve $path : { };
		981	}
		982
		983	my $pid;
		984
		985	sub db_save() {
		986	warn "saving database $path\n";#d# remove later
		987	waitpid $pid, 0 if $pid;
		988	if (0 == ($pid = fork)) {
		989	$db->{_meta}{version} = 1;
		990	Storable::nstore $db, "$path~";
		991	rename "$path~", $path;
		992	cf::_exit 0 if defined $pid;
		993	}
		994	}
		995
		996	my $dirty;
		997
		998	sub db_sync() {
		999	db_save if $dirty;
		1000	undef $dirty;
		1001	}
		1002
		1003	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {
		1004	db_sync;
		1005	});
		1006
		1007	sub db_dirty() {
		1008	$dirty = 1;
		1009	$idle->start;
		1010	}
		1011
		1012	sub db_get($;$) {
		1013	@_ >= 2
		1014	? $db->{$_[0]}{$_[1]}
		1015	: ($db->{$_[0]} \|\|= { })
		1016	}
		1017
		1018	sub db_put($$;$) {
		1019	if (@_ >= 3) {
		1020	$db->{$_[0]}{$_[1]} = $_[2];
		1021	} else {
		1022	$db->{$_[0]} = $_[1];
		1023	}
		1024	db_dirty;
		1025	}
		1026
		1027	attach_global
		1028	prio => 10000,
		1029	on_cleanup => sub {
		1030	db_sync;
		1031	},
		1032	;
		1033	}
		1034
		1035	#############################################################################
		1036	# the server's main()
		1037
		1038	sub cfg_load {
		1039	open my $fh, "<:utf8", cf::confdir . "/config"
		1040	or return;
		1041
		1042	local $/;
		1043	*CFG = YAML::Syck::Load <$fh>;
		1044	}
		1045
		1046	sub main {
		1047	cfg_load;
		1048	db_load;
		1049	load_extensions;
		1050	Event::loop;
463	}	1051	}
464		1052
465	#############################################################################	1053	#############################################################################
466	# initialisation	1054	# initialisation
467		1055
		1056	sub _perl_reload(&) {
		1057	my ($msg) = @_;
		1058
		1059	$msg->("reloading...");
		1060
		1061	eval {
		1062	# cancel all watchers
		1063	$_->cancel for Event::all_watchers;
		1064
		1065	# unload all extensions
		1066	for (@exts) {
		1067	$msg->("unloading <$_>");
		1068	unload_extension $_;
		1069	}
		1070
		1071	# unload all modules loaded from $LIBDIR
		1072	while (my ($k, $v) = each %INC) {
		1073	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1074
		1075	$msg->("removing <$k>");
		1076	delete $INC{$k};
		1077
		1078	$k =~ s/\.pm$//;
		1079	$k =~ s/\//::/g;
		1080
		1081	if (my $cb = $k->can ("unload_module")) {
		1082	$cb->();
		1083	}
		1084
		1085	Symbol::delete_package $k;
		1086	}
		1087
		1088	# sync database to disk
		1089	cf::db_sync;
		1090
		1091	# get rid of safe::, as good as possible
		1092	Symbol::delete_package "safe::$_"
		1093	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1094
		1095	# remove register_script_function callbacks
		1096	# TODO
		1097
		1098	# unload cf.pm "a bit"
		1099	delete $INC{"cf.pm"};
		1100
		1101	# don't, removes xs symbols, too,
		1102	# and global variables created in xs
		1103	#Symbol::delete_package __PACKAGE__;
		1104
		1105	# reload cf.pm
		1106	$msg->("reloading cf.pm");
		1107	require cf;
		1108
		1109	# load config and database again
		1110	cf::cfg_load;
		1111	cf::db_load;
		1112
		1113	# load extensions
		1114	$msg->("load extensions");
		1115	cf::load_extensions;
		1116
		1117	# reattach attachments to objects
		1118	$msg->("reattach");
		1119	_global_reattach;
		1120	};
		1121	$msg->($@) if $@;
		1122
		1123	$msg->("reloaded");
		1124	};
		1125
		1126	sub perl_reload() {
		1127	_perl_reload {
		1128	warn $_[0];
		1129	print "$_[0]\n";
		1130	};
		1131	}
		1132
		1133	register_command "perl-reload", 0, sub {
		1134	my ($who, $arg) = @_;
		1135
		1136	if ($who->flag (FLAG_WIZ)) {
		1137	_perl_reload {
		1138	warn $_[0];
		1139	$who->message ($_[0]);
		1140	};
		1141	}
		1142	};
		1143
468	register "<global>", __PACKAGE__;	1144	register "<global>", __PACKAGE__;
469		1145
470	unshift @INC, $LIBDIR;	1146	unshift @INC, $LIBDIR;
471		1147
472	load_extensions;	1148	$TICK_WATCHER = Event->timer (
		1149	prio => 1,
		1150	at => $NEXT_TICK \|\| 1,
		1151	cb => sub {
		1152	cf::server_tick; # one server iteration
		1153
		1154	my $NOW = Event::time;
		1155	$NEXT_TICK += $TICK;
		1156
		1157	# if we are delayed by four ticks, skip them all
		1158	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
		1159
		1160	$TICK_WATCHER->at ($NEXT_TICK);
		1161	$TICK_WATCHER->start;
		1162	},
		1163	);
473		1164
474	1	1165	1
475		1166

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.27 by root, Fri Jul 21 00:51:39 2006 UTC vs. Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC

Diff Legend

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.27 by root, Fri Jul 21 00:51:39 2006 UTC vs.
Revision 1.76 by root, Mon Oct 2 15:28:36 2006 UTC